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Why does my dog have recurring bloody diarrhea with no diagnosis?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | spayed | 7 lbs

My chiwawa gets sick with diarrhea and blood every week or two. Been to 2 vets, many test, an exray, to hear them say there is nothing wrong with her. One vet thinks she has anxiety and that’s what causes her diarrhea. Any thoughts. She is on special food that is easy on the stomach now but she still gets sick. Help

1 Answer

Most Helpful Answer

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Answered By Megan, DVM, CVA

Veterinarian

Published on April 13th, 2018

Poor Lola. There are so additional things that your vet could look into. I would have her poop tested for campylobacter and giardia. These are common parasites/bacteria that cause diarrhea but can be difficult to diagnose on a regular fecal test done in house. I would also try her on a prescription hypoallergenic food. If she has an allergy to something in the food, this could also cause on/off diarrhea. Finally, I would talk to your vet about running a GI panel. This tests for Vitamin B12, folate, and 2 pancreatic enzymes. I would also start her on a probiotic. I like Purina fortiflora, propectalin, or vetriscience brands. It is NOT normal for them to have diarrhea especially with blood this often. It could be stressed but I would want to rule everything else out. I hope this helps!

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